.tishi {
  width: 300px;
  border-radius: 4px;
  padding: 10px 10px;
  position: fixed;
  z-index: 11;
  top: 150px;
  left: 50%;
  margin-left: -150px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0px 0px 5px #000000;
  display: none;
}
.tishi p {
  text-align: center;
}
.tishi p span {
  font-size: 18px;
  color: red;
  margin-right: 2px;
}
.tishi p:nth-child(2) {
  margin-top: 15px;
  color: red;
}